Have scientists discovered the cure for potholes?

First, there are small cracks in the pavement. Next thing you know, the pothole-filled street is closed off for repairs and traffic is congested for a week. America’s infrastructure is falling apart. It’s a political issue, but some policy solutions — just like building more roads — are unlikely to help. So while we wait on that, scientists are working on materials that repair themselves and are focusing on two of the most important materials in infrastructure: asphalt an